Improvement in refrigerators



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Letters .Patent No. 93,904, dcted'August 17, 186.9.

IBPRO'VEMENT IN REFRIGERATORS.

The Schedule referred to in these-Letters Patent and making pari: of the same.

To all whma it may concern Be it known that I, THOMAS L. RANKIN, of Peru, in the county of La Salle, and in the State or Illinois, have invented certain new and useful Improvements in Refrigerators; and do hereby declare thatthe following is ,a full, clear, and exact description thereof, reference being had to the accompanyingldrawings, and to the letters of reference marked thereen, making a part of this specification. ,i ,y

rlhe nature of my invention consists in thecoustruction oi'a refrigerator, and in attaching anficej-box to the door oi' the chamber in which the articles are placed, as will hereafter be fully set fbrthranddescribed.

'Ihc accompanying drawing represents a perspective of my invention, part of the side being broken away, so as to show the interior Letter A represents the frame of the refrigerator, which is'constructed of two or more thicknesses of any suitable material, placed at such a distance apart as to form air-chamberson every side, when tbe-door l5 is closed, of the chamber G,in which thearticles are to be preserved. y

Inside of the frame, and extending over the top of the chamber O is a door, D, which has an icefbo'rf' secured to its lowered side, extending downward into the chamber. i f 1 This box incliues downward'toward the baciiyso that as rapidly as the ice melts, the water-wh., drain downward and pass oi through the tubeliarlid;also makes the door easier to raise.' f a.. La

As the warm air of the chamber naturallyiiisesnto the top, it is broughtin contact with the bdttcmand sides of the ice-box, where, being cooled, it immediately'descends again, and thus the chamberisk kept much cooler than could be `done by havingi the* 'ice in any other position.

.As rapidly as the waters drained from .the ice-box, it passes through the tube H into the trough K, and from there it is carried oii through the bottom of the frame by the pipe L. i

Warm air coming in contact with the ice-box will condense into moisture on the bottom, and a's the box is inclined toward the trough, will run down the inoline and drip into the trough.

lVhen the door is raised, however, unless the trough is made wide enough, the moisture would drip down into the chamber u'pou the articles underneath and in order to prevent this, I attach the trip-plate N loosely to the back part of the box, having its ends and front side turned upward, so as to catch this moisture and conduct it back over the trough.

Letter M represents a section of the frame or walls placed upon the bottom of the chamber C, which consists ofthe outer and inner portion of' the wall, having a lining. of pasteboard, and-asheet ot pasteboard placed midway between them, so as to form two air-chambers instead of'one.

As pasteboard is one of the best non-conductors that we have, by lining the interior of the air-chamber alone, the chamber C is much better protected than it would otherwise be, but when a third sheet oi the pastehoard is added, so as to form two or more chambers, the protecting power is increased many fold.'

Having thus described my invention,

What I claim, and desire to secure by4 Letters Patent isl. Attaching an ice-box to the door of a refrigerator, so as to have it over the top of the chamber,sub stantia-lly as set forth.

2. In combination with the ice-box G, the tripplate N, tube H, trough K, and tube L, when used to carry oli' the waste ice-water, substantially as shown.

3. The. frame A, doors B and D, ice-box G, tripsheet N, tubes H and L, trough K, and chamber O, when all are combined to form a refrigerator, substantially as set forth and described.

In testimony that I claim the foregoing, I have hereunto set my hand, this 19th day of J une, 1869;

THOS. L. RANKIN.

X'Vitnesses':

CHARLES W. GRAPMUCK, GEO. D. LADD. 

